using Robotico.Nexus.Client.Tests.TestSupport;
using Robotico.Result.Errors;
using Robotico.Time;
using Xunit;

namespace Robotico.Nexus.Client.Tests.Time;

public class NexusTimeStoreTests : IAsyncLifetime
{
    private NexusTestHost _host = null!;
    private NexusClient _client = null!;

    public async Task InitializeAsync()
    {
        _host = await NexusTestHost.StartAsync();
        Robotico.Result.Result<NexusClient> connected = NexusClient.Connect(_host.ConnectionUri(NexusUriSchemes.Time));
        Assert.True(connected.IsSuccess(out NexusClient? client, out _));
        _client = client!;
    }

    public async Task DisposeAsync()
    {
        _client.Dispose();
        await _host.DisposeAsync();
    }

    [Fact]
    public void Open_Succeeds_WhenEngineReachable()
    {
        Robotico.Result.Result<ITimeSession> result = _client.Time.Open("mytimedb");

        Assert.True(result.IsSuccess(out ITimeSession? session, out _));
        session!.Dispose();
    }

    [Fact]
    public void Open_UsesDefaultDatabaseName_WhenPathBlank()
    {
        Robotico.Result.Result<ITimeSession> result = _client.Time.Open(string.Empty);

        Assert.True(result.IsSuccess(out ITimeSession? session, out _));
        session!.Dispose();
    }

    [Fact]
    public void Open_Fails_WhenPingReportsEngineFailure()
    {
        Robotico.Result.Result<ITimeSession> result = _client.Time.Open(FakeNexusTriggers.PingReportsFailure);

        Assert.True(result.IsError(out IError? error));
        Assert.Equal(NexusErrors.Unavailable, error!.Code);
    }

    [Fact]
    public void Open_Fails_WhenPingThrowsRpcException()
    {
        Robotico.Result.Result<ITimeSession> result = _client.Time.Open(FakeNexusTriggers.PingThrows);

        Assert.True(result.IsError(out IError? error));
        Assert.Equal(NexusErrors.Unavailable, error!.Code);
    }

    [Fact]
    public void OpenOrCreate_DelegatesTo_Open()
    {
        Robotico.Result.Result<ITimeSession> result = _client.Time.OpenOrCreate("greenfield-time-db");

        Assert.True(result.IsSuccess(out ITimeSession? session, out _));
        session!.Dispose();
    }

    [Fact]
    public void Create_Fails_WithAlreadyExists_WhenPingSucceeds()
    {
        Robotico.Result.Result<ITimeSession> result = _client.Time.Create("already-reachable-time-db");

        Assert.True(result.IsError(out IError? error));
        Assert.Equal(NexusErrors.AlreadyExists, error!.Code);
    }

    [Fact]
    public void Create_Fails_WhenInitialPingReportsFailure()
    {
        Robotico.Result.Result<ITimeSession> result = _client.Time.Create(FakeNexusTriggers.PingReportsFailure);

        Assert.True(result.IsError(out IError? error));
        Assert.Equal(NexusErrors.Unavailable, error!.Code);
    }
}